CN106003411B - A kind of mechanical nodular cast iron pipe fittings cement mortar liner coating machine - Google Patents
A kind of mechanical nodular cast iron pipe fittings cement mortar liner coating machine Download PDFInfo
- Publication number
- CN106003411B CN106003411B CN201610629769.9A CN201610629769A CN106003411B CN 106003411 B CN106003411 B CN 106003411B CN 201610629769 A CN201610629769 A CN 201610629769A CN 106003411 B CN106003411 B CN 106003411B
- Authority
- CN
- China
- Prior art keywords
- cement mortar
- rotating cage
- vertical shaft
- cast iron
- pressure head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000011083 cement mortar Substances 0.000 title claims abstract description 39
- 239000011248 coating agent Substances 0.000 title claims abstract description 36
- 238000000576 coating method Methods 0.000 title claims abstract description 36
- 229910001141 Ductile iron Inorganic materials 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 210000004907 gland Anatomy 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 238000011017 operating method Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract 1
- 241000209094 Oryza Species 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000003894 drinking water pollution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000007531 graphite casting Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
- B28B19/0023—Lining the inner wall of hollow objects, e.g. pipes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Revetment (AREA)
Abstract
A kind of mechanical nodular cast iron pipe fittings cement mortar liner coating machine, including automatic stopping device, steel rotating cage, rolling bearing, upper pylon, vertical shaft, main motor, directive wheel, base opening pallet, whereabouts stopping means etc., the platform Z connections of the bottom and automatic stopping device of the upper end of described chassis and upper pylon, the bottom of chassis is provided with chassis, it is connected at the top of steel rotating cage by the bearing holder (housing, cover) X of upper bearing (metal) with merging with upper tower top, steel rotating cage bottom sets the rotating cage terminal pad Y of steel rotating cage and with being fixed with tubular pipe fitting C on bevel gear assembly connecting base plate, tubular pipe fitting C inner bottom parts are placed with base opening pallet, in upper tower top setting vertical shaft, whereabouts stopping means is provided with the bottom of pressure head.The flatness of the invention liner is good, and finish improves, and water delivery coefficient improves, and liner is reduced from drum, applied in cast iron pipe fittings fluid pressure type coating cement mortar lining technique field.
Description
Technical field
The present invention relates to a kind of mechanical spheroidal graphite casting in cast iron pipe fittings mechanized application cement mortar lining technique field
Iron pipe part cement mortar liner coating machine, especially suitable for bend pipe class, straight tube class, threeway class nodular cast iron pipe fittings ductile iron pipe
The mechanized application of part cement mortar liner.
Background technology
The nodular cast iron pipe fittings of pressure-bearing are presently used for by ISO2531；2009 international standards and GB/T13295-2013 countries
Standard requirement, nodular cast iron pipe fittings inwall will coat certain thickness cement mortar liner, by ISO4179:2005 regulations, according to
Specification is different, and thickness of inner lining is 3-12 millimeters, and its effect is:1st, pipe fitting anti-corrosion；2nd, drinking water pollution is prevented；3rd, surface is smooth
Lining be advantageous to improve water delivery coefficient.Because nodular cast iron pipe fittings specification kind is various, it is not easy to realize mechanized application, for a long time
Since both at home and abroad professional pipe fitting production firm adopt the traditional handicraft of manual application cement mortar liner.The water coated by hand
Cement mortar liner is influenceed by operation technical ability, and lining quality is uneven, and subject matter shows that cement mortar liner is strong
Spend low, come off by external impacts cracky.Long-term storage is easy " from drum ", " cracking ".Evenness of lining, finish is poor, influences defeated
Water coefficient.In waterline running, once cement mortar Fall of lining, can not only cause the pollution of water, be taken off when serious
The cement mortar liner fallen can block valve, cause whole piece waterline to be unable to normal use.Ball is coated using mechanical method
Graphite cast iron pipe part cement mortar liner substitutes traditional manual application method, not only can General Promotion nodular cast iron pipe fittings entirety
Quality, and the target that pipe fitting factory is unanimously pursued.This patent uses for reference pipe of cement production principle, in repetition test and improved
On the basis of can not only realize straight tube, the mechanization of threeway class nodular cast iron pipe fittings cement mortar liner coating, can also realize bend pipe
Class coating machine.Therefore, it is always anxious treat to develop a kind of mechanical nodular cast iron pipe fittings cement mortar liner coating machine
The new problem solved.
The content of the invention
It is an object of the invention to provide a kind of mechanical nodular cast iron pipe fittings cement mortar liner coating machine, the invention cement
The intensity of mortar liner brings up to 0.15MPA, the flatness of liner by 0.03MPA, and finish improves, and water delivery coefficient improves
50%, liner is reduced from drum, crackle tendency 95%, and mechanized application efficiency compared with manual application improves 3-5 times.
The object of the present invention is achieved like this：A kind of mechanical nodular cast iron pipe fittings cement mortar liner coating machine, bag
Include automatic stopping device, steel rotating cage, rolling bearing, upper pylon, vertical shaft, belt pulley, bridge shaft, speed change change gear, presser feet, pressure head,
Chassis, chassis, boom hoist cable, bevel gear assembly, fixed pulley, attached rope, reductor, lifting motor, main motor, counterweight, rope
Button, center hanging wheel, rotatable change, directive wheel, base opening pallet, whereabouts stopping means, the upper end of described chassis and upper pylon
Bottom and automatic stopping device platform Z connections, the bottom of chassis is provided with chassis, passes through the bearing of upper bearing (metal) at the top of steel rotating cage
Set X is connected with merging with upper tower top, and steel rotating cage bottom sets the rotating cage terminal pad Y of steel rotating cage simultaneously to connect with bevel gear assembly
Connect, bevel gear assembly, belt pulley, bridge shaft, speed change change gear, main motor, reductor, lifting motor fill installed in automatic stopping
On the platform Z put, reductor, the boom hoist cable of lifting motor are passed down through at the top of steel rotating cage from upper tower top center hanging wheel
Upper bearing (metal) connect the rotatable change on vertical shaft top downwards, be provided with directive wheel at the top of vertical shaft, vertical shaft lower end passes through automatic stopping
Pressure head is connected under the platform Z-direction of device, fixed pulley is connected with attached rope, and balance weight iron is connected with sling, and pressure head is connected with presser feet, chassis
On be fixed with tubular pipe fitting C, tubular pipe fitting C inner bottom parts are placed with base opening pallet, in upper tower top setting vertical shaft, in pressure head
Bottom is provided with whereabouts stopping means；
Described presser feet is made up of spring, gland, bolt, and presser feet is loaded into pressure head, and spring is loaded into pressure head, gland is led to
Bolt is crossed to fix with pressure head；
A kind of operation principle of described mechanical nodular cast iron pipe fittings cement mortar liner coating machine and use operation side
Method is to be provided with directive wheel at the top of described vertical shaft, and directive wheel and vertical shaft can move up and down along the vertical rail W in steel rotating cage, main
Motor drives bevel gear assembly by speed governing bridge shaft, and bevel gear assembly drives steel rotating cage, and steel rotating cage passes through directive wheel band
Dynamic vertical shaft rotating, the pressure head that vertical shaft drives its lower end to connect rotate；To prevent boom hoist cable from being released in lifting process, especially set
Meter tensioning fixed pulley, by attached rope, counterweight completes tensioning, and passes through sling tension adjusting；Presser feet closely pastes with pipe fitting C inwalls
Close, ensure pressure head extruding cement mortar lining thickness it is uniform, for prevent because pipe fitting C inwalls out-of-flatness or ellipse cause presser feet with
Pipe fitting C inwall frictional resistance is excessive to influence pressure head rotation, presser feet part design spring yielding device；Tube-shaped tube is fixed with chassis
Part C, tubular pipe fitting C inner bottom parts are placed with base opening pallet；Vertical shaft lifting stopping means is provided with upper tower top；In the bottom of pressure head
Provided with whereabouts stopping means；
A kind of pipe fitting of described mechanical nodular cast iron pipe fittings cement mortar liner coating machine coating includes straight tube and three
Logical and bend pipe class pipe fitting, the straight tube, threeway and bend pipe class pipe fitting are monoblock cast, nominal diameter DN80-DN300,
DN1000-DN2600, length 0-3 rice；
A kind of described mechanical nodular cast iron pipe fittings cement mortar liner coating machine coating bend pipe class pipe fitting A, presser feet root
It is adjusted according to bend pipe radian, rigid vertical shaft is changed to flexible axle therewith.
The present invention is characterized by its structure and working principle.
A kind of mechanical nodular cast iron pipe fittings cement mortar liner coating machine compared with prior art, has in cement mortar
The intensity of lining brings up to 0.15MPA, the flatness of liner by 0.03MPA, and finish improves, and water delivery coefficient improves 50%, reduces
Liner from drum, crackle tendency 95%, mechanized application compared with manual application efficiency improve 3-5 times the advantages that, will widely answer
For in cast iron pipe fittings mechanized application cement mortar lining technique field.
Brief description of the drawings
Below in conjunction with the accompanying drawings and embodiment the present invention is described in detail.
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of mechanical presses header portion of the present invention.
Fig. 3 is Fig. 2 partial enlarged drawing.
Fig. 4 is the structural representation of the present invention 45 ° of double plate pipe fittings of coating.
Fig. 5 is the structural representation that the present invention coats overall tee pipe fitting.
Fig. 6 is the structural representation of pipe fitting through walls among present invention coating double plate.
Embodiment
Referring to the drawings, a kind of mechanical nodular cast iron pipe fittings cement mortar liner coating machine, including automatic stopping device 1,
Steel rotating cage 2, rolling bearing 3, upper pylon 4, vertical shaft 5, belt pulley 6, bridge shaft 7, speed change change gear 8, presser feet 9, pressure head 10, chassis
11st, chassis 12, boom hoist cable 13, bevel gear assembly 14, fixed pulley 15, attached rope 16, reductor 17, lifting motor 18, master
Motor 19, counterweight 20, sling 21, center hanging wheel 22, rotatable change 23, directive wheel 24, base opening pallet 25, whereabouts stopping means
26, the upper end of described chassis 11 and the bottom of upper pylon 4 are connected with the platform Z of automatic stopping device 1, and the bottom of chassis 11 is set
There is chassis 12, the top of steel rotating cage 2 is connected by the bearing holder (housing, cover) X of upper bearing (metal) 3 with merging with the upper top of pylon 4, and the bottom of steel rotating cage 2 is set
Put the rotating cage terminal pad Y of steel rotating cage 2 and be connected with bevel gear assembly 14, bevel gear assembly 14, belt pulley 6, bridge shaft 7,
Speed change change gear 8, main motor 19, reductor 17, lifting motor 18 are arranged on the platform Z of automatic stopping device 1, reductor 17,
The boom hoist cable 13 of lifting motor 18 from the upper top center hanging wheel 22 of pylon 4 be passed down through the upper bearing (metal) 3 at the top of steel rotating cage 2 to
The rotatable change 23 on lower connection vertical shaft 5 top, the top of vertical shaft 5 are provided with directive wheel 24, and the lower end of vertical shaft 5 passes through automatic stopping device
Pressure head 10 is connected under 1 platform Z-direction, fixed pulley 15 is connected with attached rope 16, and balance weight iron 20 is connected with sling 21, pressure head 10 and presser feet
9 are connected, and tubular pipe fitting C is fixed with chassis 12, and tubular pipe fitting C inner bottom parts are placed with base opening pallet 25, are set at the upper top of pylon 4
Vertical shaft 5 is put, whereabouts stopping means 26 is provided with the bottom of pressure head 10.
Described presser feet 9 is made up of spring 9-1, gland 9-2, bolt 9-3, and presser feet 9 is loaded into pressure head 10, by spring 9-1
Load pressure head 10, gland 9-2 is fixed by bolt 9-3 and pressure head 10.
A kind of operation principle of described mechanical nodular cast iron pipe fittings cement mortar liner coating machine and use operation side
Method is that the described top of vertical shaft 5 is provided with directive wheel 25, and directive wheel 25 and vertical shaft 5 can turn above and below the vertical rail W in 2 cages along steel
Mobile, main motor 19 drives bevel gear assembly 14 by speed governing bridge shaft 7, and bevel gear assembly 14 drives steel rotating cage 2, and steel turns
Cage 2 drives vertical shaft 5 to rotate by directive wheel 24, and vertical shaft 5 drives the pressure head 10 of its lower end connection to rotate；To prevent boom hoist cable
13 release in lifting process, are specifically designed tensioning fixed pulley 15, and by attached rope 16, counterweight completes tensioning, and is adjusted by sling 21
Save tensile force；Presser feet 9 is brought into close contact with pipe fitting C inwalls, ensures that the cement mortar lining thickness that pressure head 10 extrudes is uniform, to prevent
Because pipe fitting C inwalls out-of-flatness or ellipse cause presser feet 9 to be rotated with the excessive pressure head 10 that influences of pipe fitting C inwall frictional resistance, presser feet 9
Part designs spring 9-1 yielding devices；Tubular pipe fitting C is fixed with chassis 13, tubular pipe fitting C inner bottom parts are placed with base opening pallet 26；
Vertical shaft lifting stopping means 1 is provided with the upper top of pylon 4；Whereabouts stopping means is provided with the bottom of pressure head 10.
A kind of pipe fitting of described mechanical nodular cast iron pipe fittings cement mortar liner coating machine coating includes straight tube and three
Logical and bend pipe class pipe fitting, the straight tube, threeway and bend pipe class pipe fitting are monoblock cast, nominal diameter DN80-DN300,
DN1000-DN2600, length 0-3 rice.
A kind of described mechanical nodular cast iron pipe fittings cement mortar liner coating machine coating bend pipe class pipe fitting A, presser feet 9
It is adjusted according to bend pipe radian, rigid vertical shaft 5 is changed to flexible axle therewith.
Fig. 4 is the structural representation of the present invention 45 ° of double plate pipe fittings of coating, and A represents 45 ° of double plate pipe fittings；The gold of double plate pipe fitting
Belong to layer " use " D " expression, the inner liner of double plate pipe fitting " use " E " expression；45 ° of double plate pipe fittings are in technical scheme in bend pipe class pipe fitting
One kind.
Fig. 5 is the structural representation that the present invention coats overall tee pipe fitting, and B represents overall tee pipe fitting；Overall three-way pipe
The metal level of part " use " F " expression, the inner liner of overall tee pipe fitting " use " G " represents；Overall tee pipe fitting is in technical scheme
One kind in threeway class pipe fitting.
Fig. 6 is the structural representation of pipe fitting through walls among present invention coating double plate, and C represents pipe fitting through walls among double plate；It is double
The metal level of pipe fitting through walls among disk " use " H " expression, the inner liner of double plate centre pipe fitting through walls " use " I " represents；Among double plate
Pipe fitting through walls is one kind in straight tube class pipe fitting in technical scheme.
Claims (5)
1. a kind of mechanical nodular cast iron pipe fittings cement mortar liner coating machine, including automatic stopping device, steel rotating cage, the axis of rolling
Hold, upper pylon, vertical shaft, belt pulley, bridge shaft, speed change change gear, presser feet, pressure head, chassis, chassis, boom hoist cable, bevel gear
Assembly, fixed pulley, attached rope, reductor, lifting motor, main motor, counterweight, sling, center hanging wheel, rotatable change, directive wheel,
Base opening pallet, whereabouts stopping means, it is characterised in that：The bottom and automatic stopping device of the upper end of described chassis and upper pylon
Platform（Z）Connection, the bottom of chassis are provided with chassis, the bearing holder (housing, cover) that steel rotating cage top passes through upper bearing (metal)（X）With merging and upper tower
Top of the trellis connects, and steel rotating cage bottom sets the rotating cage terminal pad of steel rotating cage（Y）And be connected with bevel gear assembly, bevel gear is total
Into, belt pulley, bridge shaft, speed change change gear, main motor, reductor, lifting motor be arranged on automatic stopping device platform（Z）
On, reductor, the boom hoist cable of lifting motor are passed down through the upper bearing (metal) at the top of steel rotating cage from upper tower top center hanging wheel
The rotatable change on connection vertical shaft top downwards, vertical shaft top are provided with directive wheel, and vertical shaft lower end is put down through automatic stopping device
Platform（Z）Connection pressure head downwards, fixed pulley are connected with attached rope, and balance weight iron is connected with sling, and pressure head is connected with presser feet, fixed on chassis
There is tubular pipe fitting（C）, tubular pipe fitting（C）Inner bottom part is placed with base opening pallet, vertical shaft is set in upper tower top, in the bottom of pressure head
Provided with whereabouts stopping means.
A kind of 2. mechanical nodular cast iron pipe fittings cement mortar liner coating machine according to claim 1, it is characterised in that：
Described presser feet is made up of spring, gland, bolt, and presser feet is loaded into pressure head, and spring is loaded into pressure head, by gland by bolt with
Pressure head is fixed.
A kind of 3. mechanical nodular cast iron pipe fittings cement mortar liner coating machine according to claim 1, it is characterised in that：
A kind of operation principle of described mechanical nodular cast iron pipe fittings cement mortar liner coating machine and using operating method it is, it is described
Vertical shaft at the top of be provided with directive wheel, directive wheel and vertical shaft can be along the vertical rails in steel rotating cage（W）Move up and down, main motor passes through
Speed governing bridge shaft drives bevel gear assembly, and bevel gear assembly drives steel rotating cage, and steel rotating cage drives vertical shaft to turn by directive wheel
Dynamic, the pressure head that vertical shaft drives its lower end to connect rotates；To prevent boom hoist cable from being released in lifting process, it is fixed to be specifically designed tensioning
Pulley, by attached rope, counterweight completes tensioning, and passes through sling tension adjusting；Presser feet and pipe fitting（C）Inwall is brought into close contact, and is protected
It is uniform to demonstrate,prove the cement mortar lining thickness of pressure head extruding, to prevent because of pipe fitting（C）Inwall out-of-flatness or ellipse cause presser feet and pipe
Part（C）Inwall frictional resistance is excessive to influence pressure head rotation, presser feet part design spring yielding device；Tube-shaped tube is fixed with chassis
Part（C）, tubular pipe fitting（C）Inner bottom part is placed with base opening pallet；Vertical shaft lifting stopping means is provided with upper tower top；In pressure head
Bottom is provided with whereabouts stopping means.
A kind of 4. mechanical nodular cast iron pipe fittings cement mortar liner coating machine according to claim 1, it is characterised in that：
A kind of pipe fitting of described mechanical nodular cast iron pipe fittings cement mortar liner coating machine coating includes straight tube and threeway and bend pipe
Class pipe fitting, the straight tube, threeway and bend pipe class pipe fitting are monoblock cast, nominal diameter DN80-DN300, DN1000-
DN2600, length 0.1-3 rice.
A kind of 5. mechanical nodular cast iron pipe fittings cement mortar liner coating machine according to claim 1, it is characterised in that：
A kind of described mechanical nodular cast iron pipe fittings cement mortar liner coating machine coating bend pipe class pipe fitting（C）, presser feet is according to bend pipe
Radian is adjusted, and rigid vertical shaft is changed to flexible axle therewith.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610629769.9A CN106003411B (en) | 2016-08-04 | 2016-08-04 | A kind of mechanical nodular cast iron pipe fittings cement mortar liner coating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610629769.9A CN106003411B (en) | 2016-08-04 | 2016-08-04 | A kind of mechanical nodular cast iron pipe fittings cement mortar liner coating machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106003411A CN106003411A (en) | 2016-10-12 |
| CN106003411B true CN106003411B (en) | 2017-12-05 |
Family
ID=57134421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610629769.9A Active CN106003411B (en) | 2016-08-04 | 2016-08-04 | A kind of mechanical nodular cast iron pipe fittings cement mortar liner coating machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN106003411B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4252763A (en) * | 1978-06-06 | 1981-02-24 | Raymond International Builders, Inc. | Method and apparatus for cement lining of pipes |
| CN202097804U (en) * | 2011-05-18 | 2012-01-04 | 上海蓝云管道工程有限公司 | Lining cement mortar spraying machine for large-size pipes |
| CN202805404U (en) * | 2012-09-26 | 2013-03-20 | 山西光华铸管有限公司 | Middle-sized centrifugal nodular cast iron pipe cement coating and lining machine |
| CN103624874B (en) * | 2013-11-15 | 2015-12-16 | 新兴铸管股份有限公司 | A kind of metal pipe cement mortar liner machine |
| CN103707411B (en) * | 2014-01-14 | 2016-02-03 | 广西安钢永通铸管管业有限公司 | Ductile iron pipe coated lining equipment |
| CN205870842U (en) * | 2016-08-04 | 2017-01-11 | 营口经济技术开发区爱维尔铸业有限公司 | Mechanical type nodular cast iron pipe cement mortar inside lining coating machine |
-
2016
- 2016-08-04 CN CN201610629769.9A patent/CN106003411B/en active Active
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| CN106003411A (en) | 2016-10-12 |
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